Patches base on Suravee's ACPI GICv2m support:
https://lkml.org/lkml/2015/12/10/475
The following git branch contains submitted patches along with
the useful patches from the test point of view (mainly ACPI ARM64 PCI support).
https://github.com/semihalf-nowicki-tomasz/linux.git (gicv3-its-acpi-v3)